SparkFun I2C DAC Breakout - MCP4725

While most microcontrollers only simulate an analogue voltage using Pulse Width Modulation, this breakout board allows your digital source to generate a true analogue signal. The SparkFun MCP4725 DAC Breakout provides accurate, 12-bit analogue voltage output via I²C and features onboard EEPROM to store settings even after power loss. This makes it an excellent choice for sound generation, custom musical instruments, and a wide variety of creative electronics projects where standard digital signals fall short.

Designed for Usability

This version of the MCP4725 Breakout includes several hardware adjustments that optimise the board dimensions, I²C pinout, and IC footprint to better suit your custom enclosures and breadboards.

• Complete Access: All pins are broken out to 0.1-inch pitch headers, providing convenient connectivity options for prototyping and experimentation. This gives you easy access to VCC, SCL, SDA, multiple GND pins, and the Signal OUT pin.
• Easy Probing: The dedicated Signal OUT and GND pins are grouped together, making it simple to connect an oscilloscope or other testing equipment directly to the board.
• Multiple Devices: If you plan to run multiple DACs on the same I²C bus, the onboard pull-up resistors can be easily disabled by cutting the traces on the jumper pad on the back of the board.

Whether you are building a custom synthesizer or replacing a PWM signal with a smooth sine wave, this breakout board provides a straightforward and highly capable solution for converting your digital code into physical analogue outputs.

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (MCP4725)
• Python Package
• GitHub Hardware Repo